IBM Z Software


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C/C++ and Fortran Compilers

Showing 51 of 8225

Using CPACF with HW built-In instructions

ISV likes to use HW Crypto support of CPACF (see Principles of Operation) in their applications running on z/OS. As of requiremts of their architecture and as of performance reasons, they do not use ICSF. So they have to use the CPACF instructions...
over 9 years ago in C/C++ and Fortran Compilers / C/C++ 7 Not under consideration

Provide Fortran compiler option to force variables to be explicitly declared

The IMPLICIT none statement is available to us, but it has to be coded in every single program, subroutine and function, whereas a compiler option would not require a code modification to enforce explicit declarations. The PL/I compiler has the RU...
over 9 years ago in C/C++ and Fortran Compilers / Fortran 3 Not under consideration

RFE for header file cache optimization on C compiler

We would like to see the following implemented with the C compiler frontend just like it is for the C++ compiler frontend beginning with Xlc 12.1: -qxflag=dircache[,m[,n]] where m and n are optional * m is a integral prime number between 2 and 71 ...
over 10 years ago in C/C++ and Fortran Compilers / C/C++ 5 Not under consideration

Enabling the IBM LinuxONE and IBM Power 10 ( or later ) C/C++ Compilers to integrate with Intel oneAPI

Intel oneAPI is an open, cross-architecture programming model that frees developers to use a single code base across multiple architectures. The result is accelerated compute without vendor lock-in. for more information : https://www.intel.com/con...
about 1 year ago in C/C++ and Fortran Compilers / C/C++ 5 Not under consideration

Adding IBM Deep search with ChatGPT Codex (or IBM Coding Services) by AI driven Coding training and inference ( can be Human Supervised)

Using IBM Deep search with Coding services will train the AI System for Optimized code and it will make the software development more efficient in coding, testing, tracking and debugging. Also may be add the AI driven DevOps Orchestration
over 1 year ago in C/C++ and Fortran Compilers / C/C++ 11 Not under consideration

Have C compile optionally use non deprecated instruction BALR and use BASR

Today if I want to call an assembler program from C it uses BALR. This is deprecated, and I need special code to support it. The compiler needs an option to say "use Branch and save (BASR) instead of BALR"
almost 2 years ago in C/C++ and Fortran Compilers / C/C++ 8 Not under consideration

SASC/C++ Compiler Migration to XL C/C++

Below SASC/C++ functions are not available in XL C/C++ for RUV product. Could you please provide this functionality? S No. Function/ Parameters Description1 abort abnormally terminate execution2 access test for the existence and access privileges ...
over 3 years ago in C/C++ and Fortran Compilers / C/C++ 3 Not under consideration

Add support for function inlining at OPT(0) [Metal C]

The METAL option of the xlc compiler does not support selectively inlining functions without optimizing the rest of the code We would like to be able to use a compiler attribute (such as "__always_inline__" or "_inline") to force inlining of certa...
almost 4 years ago in C/C++ and Fortran Compilers / C/C++ 2 Not under consideration

XL Fortran Bogus Error on Assumed Shape Dummy Argument of BIND(C) Procedure

The XL Fortran compiler gives a bogus error message for the below valid Fortran program. The restriction that presumably generates this error message was replaced in Fortran 2018 standard (sec 18.3.6 point 5). Furthermore, the XL compiler provides...
about 4 years ago in C/C++ and Fortran Compilers / Fortran 1 Future consideration

XL C/C++ for z/OS Compiler Features

We'd like to move to using the newer Clang-based XL C/C++ compiler, but we need some features that are not present in the newer product, namely: AMODE31 supportEBCDIC supportHex float support
about 4 years ago in C/C++ and Fortran Compilers / C/C++ 2 Future consideration

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